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What is the difference between a pacemaker and the total artificial heart (TAH)?

What is the difference between a pacemaker and the total artificial heart (TAH)? Correct Answer A pacemaker is an assistive device which helps the original heart to generate impulses but a TAH completely replaces the heart

As the answer says, pacemaker is an assistive device. The heart contracts due to the impulses generated by the SA node and the AV node. When these nodes are unable to generate signals, a pacemaker is used. A TAH is needed when the Purkinjee Fibers that cause the contractions in ventricles or the any of the cardiac muscles are damaged.

Related Questions

Sentences of a paragraph are given below in jumbled order. Arrange the sentences in the right order to form a meaningful and coherent paragraph. A: The primary purpose of a pacemaker is to maintain an adequate heart rate, either because the heart's natural pacemaker is not fast enough, or because there is a block in the heart's electrical conduction system. B: These allow a cardiologist to select the optimum pacing modes for individual patients.  C: Modern pacemakers are externally programmable. D: A cardiac pacemaker is a medical device that generates electrical impulses to cause the heart muscle chambers contract and therefore pump blood.
S1:The heart is pump of life.
P :They have even succeeded in heart transplants.
Q :Nowadays surgeons are able to stop a patients heart and carry out complicated operations.
R :A few years ago it was impossible to operate on a patient whose heart was not working properly.
S :If heart stops we die in about five minutes.
S6:All this was made possible by the invention of heart-lung machine.

The Proper sequence should be:
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What is the natural pacemaker of the heart?
Which of these is known as the pacemaker of the heart?